Bath tub



FIG. 1 is a perspective view of a bath tub in accordance with thepresent invention;

FIG. 2 is a top plan view of the bath tub of FIG. 1;

FIG. 3 is a left side plan view thereof;

FIG. 4 is a back end plan view thereof;

FIG. 5 is a front end plan view thereof;

FIG. 6 is a left side perspective view thereof; and,

FIG. 7 is a back end perspective view thereof.

The ornamental design for a bath tub, as shown.